Cooking receptacle



2. Sheets-Sheet 1 J. D. FERRY June 22, 1937.

COOKING REGEPTACLE Filed sept. 50A, 1936 June 22, 1937. J. D. FERRY COOKING RECEPTACLE Filed Sept. 30, 1936 2 Sheets-Sheet 2 gmcwgvb JSEP/ D. FERRY Grimm',

Patented `lune 22, S1937 UNITED STATES PATENT GFFICE COOKING RECEPTACLE Joseph D. Ferry, Harrisburg, Pa.

Application September 30, 1936, Serial No. 103,464

17 Claims.

My invention relates to improvements in cooking receptacles and more particularly to kettles of the type used for cooking potato chips or thek like, although capable of other uses.

Difculty has been experienced with the cooking receptacles ofthe prior art due to the unequal expansion occurring in the metal forming the receptacles.

Receptacles or kettles of this type are usually partially lled with a cooking liquid lo which is heated to a high temperature through the application of heat to the bottom of the receptacle or kettle.

As a consequence, the lower portion of the receptacle is heated to a muchv or other supporting surface.

` An important object of my invention is the.

provision of a receptacle or cooking kettle constructed to accommodate unequal expansion of 2., its various parts without buckling ofthe bottom of the kettle. and without subjecting the parts of the kettle to undue stresses and strains.

A further object oi my invention is the provision of a novel supporting mechanism for a vcooking receptacle which will securely hold the receptaclein position while permitting expansion and contraction of the parts thereof.

Another object of my invention is to provide a device of this character which is of simple construction, inexpensive to manufacture and which will have a long lite tree from the destructive and deteriorating stresses of the receptacles oi' the prior art.

Other objects and advantages of my invention 4,, will be apparent during the course of the !ol,

lowing description.

Iny the accompanying drawings, which form a part of this specication and wherein like characters of reference denote like parts'throughout.

.so Figure 1 is a side elevation otfa cooking kettle embodying my invention. parts being broken away and shown in section,

Figure 2 is a top plan view thereof, one side of the supporting framework being shown in a pod 5,-. tion before assembly,

(Cl. SI1-7) Figure 3 is a longitudinal sectional view through the cooking receptacle,

Figure 4 is a transverse sectional view taken on the line 4 4 of Figure 2, one of the supporting beams being shown spaced away from the kettle for purposes of illustration,

Figure 5 is a detail fragmentary perspective view of the portion of the kettle and support adjacent one of the expansion joints,

Figure 6 is a fragmentary plan view of one of the expansion joints and the adjoining portions of the kettle and support,

Figure 7 is-a 4horizontal sectional view through one of the expansion joints and the adjacent portions of the kettle and support, 'the view being 'taken on line 1--1 of Figure 4.

Figure 8 is a detail sectional view on the line 8-8 of Figure 6, and

Figure 9 is a similar view taken on the line 9-9 oi Figure 6.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral lil designates an elongated kettle of generally rectangular shape and `formed of metal. The inlet end of the kettle is provided with a rearwardly ared end wall il `ioined to the bottom of thekettle by a vertical portion. The bottom of the kettle is ilat and arranged substantially horizontally while the forward or outlet end thereof terminates in a relatively long inclined portion i2 connected to the short forward end wall i3. The side walls I4 extend for the entire length of the kettle and are vertically arranged.

A suitable liquid such as oil or the like is disposed in the kettle to the depth indicated and the kettle is heated from underneath. It will be seen that the kettle will be heated to a high' and even temperature to a point adjacent the uppervlevel of the liquid due to the presence of the liquid and that the upper portion oi the kettle walls will not be so highly or so evenly heated. As it is customary to rigidly secure the side walls adjacent' the upper portion of the kettle to a supporting frame work, the resultant differential expansion of the upper andgilower portions of the kettle subiects'the kettle toV severe .stresses and causes buckling of .liekettle'v bottom-p To prevent this'straining and distortion of the kettle I provide the opposite sidewalls thereof with expansion joints arranged in transverse alignment and4 consisting 0f Substantilly U- are shown as four yin number, two on each 'side of the kettle varranged in transverse alignment.

The channels i5 are so-spaced as to divide the walls of the kettle into three sections. and these channels extend laterallyoutwardly from the vkettle walls. s indicated in Figures 4 and 5,

the expansion channels are deepest at their upper ends and taper to their lower` ends which consequently have a depth substantially less than the uppervportions of the channels.

Horizontal outwardly extending flanges or rlmsl I6 are provided at the top of the side walls between the channels I5 by means of angle irons l1 riveted or otherwise rigidly secured to the exterior sides of the kettle walls at `the top thereof.

The flanges i6 may have a widthequal to the I depth of the channels I5 at their upper ends and extend between the ends of the kettle and the channels and betweenthe channels.

The kettle supporting framework comprises legs i8 which may be formed from angle iron. and which are connected by longitudinally extending horizontal plate members i9 which in upon and be secured to the beams 20 while thel plates I9 are adapted to abut against the sides of the kettle in the supporting position of the framework. Notches 2| are formed in the flanges of beams 2o and in plates I9 to receive thetapered expansion channels l5 and the notches 2| have aI width substantially greaterk than the width of channels l5, as indicated in Figures 2,

5, 6 and "I, to permit expansion and contraction of the sides of the kettle through the resiliency of the expansion channels.

It will be seen that the expansion channels I5 divide the kettleflanges I8 into three sections. The sections of theilanges I6 at the outlet end of the kettle'mayfbeprigidly secured to the chan-.l nel beams 2|!y by means'of screw bolts 22. The' flange sections at theintermediate and inlet portions of the kettle-are provided withelongated klongitudinally extending slots 23 adapted to receive screw bolts which engage the beams 20 f and have large heads adapted'to overlie the edges of the slots. Suitable-washers 25 of metal or other appropriate material surround bolts 24 and fit within slots 23. The washers 25 have a thickness somewhat greater" than the thickness of flanges I6 so thatthe-heads ofbolts 24 do not engage the'flangeaj-and binding of the flanges is thereby prevented;

vA furnace or heating chamber is arranged below thekettle and comprises a refractory hearth v v2t. extendingv the length of the bottom orketue" Illand is backed up by suitable heat insulation 21. The refractory end wall or block 28 of the furnace chamber at the inlet end of thekettlc is provided with-oncoming 29 thrugh which the darne from av suitable burner 30. is adapted toprojct. A horizontalagle'iron' 3| is. secured to the vertical'portionoi kettlewall ll and its iiange slidably rests" upon 'the'refractory wall 28. The

angle iron lextends for the full Width of the "kettle to provide an additional supporting means for the inlet end thereof and also means for pre-v aosmae e y venting escape of heat between the kettle and block 28, while allowingfor longitudinal expansion and contraction of the kettle. Suitable plaster or the like 32 of the thickness of the flange of angle iron 3| is disposed beween the plate I9 and wall 28 as shown in Figures 1 and 3.

In operation the kettle is partially filled with cooking liquid and heat applied by burner 30 or by other suitable means. When the desired tem- -perature is reached, the cooking liquid produces a uniform high temperature in the portion oi'the kettle with which it is in direct contact.' causing expansion thereof. The upper portion of the kettle above the level of the cooking liquid is'at a lower temperature,- and because of the unequal expansion in the metal of the kettle, thecooler upper portion oi the kettle normally resists expansion of the hotter lower portion of the kettle. The presence ofthe expansion joints l5, notches 2| and elongated slots 23, howevenpermits this unequal expansion and contraction of the kettle without undue strains being placed on the kettle and without distortion or buckling of the kettle. The taper of the expansion joints insures a smooth and easy movement of the parts of the kettle under the forces of expansion.

While the outlet end of the kettle is shown as rigidly secured tol the channel beams 20. it may obviously be provided with slots to permit relative movement where desired, or where the temperature at this end of the kettle warrants such construction.

While I have shown and described the preferred embodiment of myinvention, it is to be understood that various changes in the size, shape and arrangement of parts maybe resorted to without departing rfrom the spirit of my invention or the scope of the subjoined claims.

Having thus described my invention, what I claim and desire to protect by Letters Patent is:

1. A cooking kettle having a bottom, side'and end walls, said side walls having expansion channels, a support, and means to secure the side walls of the kettle to the support.

f 2. A cooking kettle having a bottom and side walls, said side Walls being formed with expansion channels. a support, and means to secure the side walls of the kettley to the support while permitting relative movement of the side Walls and support longitudinally of the kettle.

3. A cooking kettle having a bottom, side and end walls, a support engaging the side wallsof the kettle. and there being expansion channels formed in said side walls of the kettle and extending from top to bottom thereof.

. 4. A cooking receptacle having a bottom and side walls, said side walls having expansion channels formed therein and extending from a point adjacent the bottointo a point adjacent the top of the receptacle, flanges secured to said side walls adjacent the upper'ends thereof, and a support engaging said flanges.

5. A cooking `receptacle having a bottom and side walls, said side walls having expansion chan- ,..nels formedtherein and extending from top to bottom thereof. flanges secured to the receptacle side walls adjacent their upper ends, and a support connectedxto said flanges. the connection betweenthe flanges and support permitting relative movement between these parts;

longitudinally of ,the receptacle in' proximity 7l thereto, flanges secured to the receptacle side walls, and means' to slidab'ly connect the ilanges and supporting beams.

'7. A cooking receptacle having a bottom and side walls and adapted to receive a cooking liquid,

said side walls having expansion channels foi-med said connection permitting free expansion and contraction of the kettle relative to the support, and'means to heat the kettle.

9. A cooking kettle having a bottom and side walls, said side Walls having expansion channels formed therein and extending from top to bottom thereof, the channels increasing in depth from bottom to top, and a support having a connection with the side walls of the kettle, said connection permitting free expansion and contraction of the kettle.

10. -A cooking kettle having a bottom and side walls, said side wallshaving expansion channels formed therein, a support arranged in proximity to the side walls of the kettle, and a boit and slot connection between the support and the side walls of the kettle.

11. A-cooking kettle having a bottom and side walls, said side wallshaving laterally projecting expansion channels extending from top to bottom thereof, supporting beams arranged in proximity to the kettle and having notches to receive the expansion channels, said notches having a greater width than the expansion channels, and bolt and slot connections between the kettle side walls and the' supporting beams.

12. A cooking kettle having a bottom and side walls, said side walls having laterally projecting expansion channels extending substantially vertically thereof, supporting beams arranged in proximity to the kettle and having notches to re- I ceive the expansion channels, said notches having a greater width than the expansion channels, flanges on the kettle side walls between the channels and adjacent the top of the side walls, and

` a sliding connectiony between the flanges and the 'supporting beams.

13. A cooking kettle having o bottom and side walls,l said side walls having laterally projecting Llexpansion channels extending substantially vertically thereof, supporting beams arranged in flanges on the kettle side walls between the channels and adjacent the top of the side walls, a sliding connection between the ilanges and the supporting beams, and means associated with said beams to engage the side walls of the kettle at lpoints spaced a substantial distance below the anses. s

14. In a cookingv kettle having a bottom and side walls, supporting beams'arranged in proximity to the kettle side walls, flanges carried by the side walls of the kettle and overlying the supporting beams, said flanges having elongated longitudinally extending slots therein, bolts extending through the slots and engaging' the supporting beams, and spacing members surrounding said bolts and arranged in the slots, said spacing-members having a thickness greater than the thickness of said ilanges.

15. In a cooking kettle having a bottom and side walls, said side walls having expansion channels therein, supporting beams arranged `in proximity' to the kettle side walls, flanges carried by the side walls of the kettle and overlying the supporting beams, said anges having elongated longitudinally extending slots therein, bolts extending through the slots and engaging the supporting beams, and spacing members surrounding the bolts and arranged in the slots, said spacing members having a thickness greater than the thickness of the anges.

16. In a cooking kettle having a bottom and side walls, said side walls having expansion channels therein, supporting beams arranged in proximity tothe kettle side walls, flanges carried by the side walls of the kettle and overlying the supporting beams, said flanges having elongated longitudinally extending slots therein. bolts extending through the slots and engaging the supporting beams, and spacing members surrounding the bolts and arranged in the slots, said spacing members having a thickness greater than the thickness of the anges, and said supporting beams having notches to receive the expansion channels, the notches having a width greater than the width of the expansion channels.

17. A cooking kettle having 'an elongated generally rectangularform with bottom and side walls,- said kettle being adapted to receive a cooking liquid, the side walls of the kettle being provided with expansion joints extending from top to bottom thereof, supporting beams extending longitudinally of the kettle in proximity to the side wallsthereof, means rigidly securing the portions of the side walls adjacent one end of the kettle to the supporting beams, and a bolt (55 

